High 8.7Published Sep 15, 2026

CVE-2026-58201Lokka: Azure Resource Manager URL path validation issue

Updated under an hour ago (2026-10-19 07:50 UTC)

Does this affect you?

It affects merill lokka. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for merill lokka

Exploited in the last 30 days

Lokka is a Model Context Protocol server for Microsoft 365, including Microsoft Graph and other services. Prior to 2.1.2, the Lokka-Microsoft tool in src/mcp/src/main.ts uses direct URL string concatenation to append the user-controlled path value to the management.azure.com base URL. A specially crafted path can alter URL authority parsing and cause an Azure Resource Manager bearer token to be sent to an unintended host. This issue is fixed in version 2.1.2.

CVSS: 8.7 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

merill lokka merill:lokka (from the name)	before 2.1.2	CNA record

References

https://github.com/merill/lokka/security/advisories/GHSA-g2gw-q38m-vjfcx-refsource-confirm
https://github.com/merill/lokka/pull/47x-refsource-misc
https://github.com/merill/lokka/commit/babead878f44cc2face2f8ee55d8b706e420947ex-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.